Secondary battery having improved safety
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United States of America Patent
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Oct 24, 2017
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app pub date -
Jan 4, 2012
filing date -
Nov 5, 2010
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Abstract
Provided are a secondary battery, a battery module, and a battery pack, which have improved safety. Particularly, since a bulletproof material is disposed on the inside and/or the outside of an exterior part, even when a conductive needle-shaped member penetrates a secondary battery, heating, burning, discharge of evaporated electrolyte, and electrical contact between the needle-shaped member and an electrode can be prevented, thereby improving safety of the secondary battery, the battery module, and the battery pack.
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